Event: Doncaster League

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Opponent Rating Result
Alan Bramall 1811 ½ - ½
T Ed Sowerby 1600 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1906 = (3411 + 400 * (1 - 0)) / 2)

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Opponent Rating Result
Patrick McGrath 0 1 - 0
Craig Le Masurier 0 1 - 0
Steven R Brooks 1553 ½ - ½
David P Hatfield 1596 ½ - ½
Paul Hagan 1402 1 - 0
Shay Topping 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1025 = (4551 + 400 * (4 - 0)) / 6)